CN113847614A - Ash removal device for flue heat exchanger of thermal power plant - Google Patents
Ash removal device for flue heat exchanger of thermal power plant Download PDFInfo
- Publication number
- CN113847614A CN113847614A CN202111176161.2A CN202111176161A CN113847614A CN 113847614 A CN113847614 A CN 113847614A CN 202111176161 A CN202111176161 A CN 202111176161A CN 113847614 A CN113847614 A CN 113847614A
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- Prior art keywords
- ash
- pipe
- ash removal
- shell
- bag
- Prior art date
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- 239000000428 dust Substances 0.000 claims abstract description 60
- 238000004140 cleaning Methods 0.000 claims abstract description 45
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003546 flue gas Substances 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000779 smoke Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 239000004071 soot Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a soot cleaning device for a flue heat exchanger of a thermal power plant, which comprises a shell, a soot cleaning component and a soot collecting component, wherein the shell is provided with a shell body; an accommodating space is formed inside the shell, the shell is provided with a flue gas inlet and a flue gas outlet, and the positions of the flue gas inlet and the flue gas outlet are opposite; the ash removal component comprises an ash removal main pipe, an ash removal branch pipe, an air pump and a driving motor, wherein one end of the ash removal main pipe is connected with the air pump, and the other end of the ash removal main pipe is connected with the driving motor; the ash collecting component comprises an ash collecting pipe, an ash collecting box and an ash collecting bag, wherein the top and the bottom of the ash collecting pipe are respectively communicated and connected with the bottom of the shell and the top of the ash collecting box; the dust collecting bag is arranged in the dust collecting box. The invention can effectively and comprehensively clean the heat exchange pipe and the heat exchange box, and meanwhile, the device is convenient to disassemble and assemble and is convenient to maintain.
Description
Technical Field
The invention relates to the technical field of flue dust removal, in particular to a dust removal device for a flue heat exchanger of a thermal power plant.
Background
At present, the actual exhaust gas temperature in the flue of the thermal power plant is higher than the designed exhaust gas temperature, and along with the implementation of advocating energy conservation and emission reduction, most thermal power plants install the heat exchanger additionally at the tail flue of the boiler to reduce the temperature of smoke, thereby improving the energy utilization rate, improving the atmospheric environment quality and ensuring the safety of power supply. The range that the flue heat exchanger used is in the flue, because the great and low-load operation flue gas velocity of flow of tail flue flying dust concentration leads to heat exchanger body bottom and the serious problem of flue dust accumulation in the place ahead to cause the effective heat transfer area of heat exchanger to reduce, the flue gas flow cross-sectional area diminishes, boiler positive pressure burning scheduling problem, thereby lead to the boiler to exert oneself not enough, the loss of discharging fume increases. However, the conventional soot cleaning of the heat exchanger mainly sweeps the surface of the heat exchanger through a soot blower, the sweeping area is limited, and the soot cleaning work of the heat exchange tube and the heat exchange box of the heat exchanger can not be effectively and comprehensively performed.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the problems occurring in the prior art.
Therefore, the invention aims to solve the technical problems that the traditional heat exchanger ash cleaning equipment has limited purging area and cannot comprehensively and effectively clean the accumulated ash of the heat exchanger.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a flue heat exchanger ash removal device of thermal power factory, it includes: the smoke inlet and the smoke outlet are arranged on the shell and are opposite in position, and the shell further comprises a first shell cover and a second shell cover; the first shell cover is arranged on one side adjacent to the flue gas inlet, and the mounting position of the second shell cover is opposite to that of the first shell cover; the ash removal component comprises an ash removal main pipe, an ash removal branch pipe, an air pump and a driving motor; the air pump is arranged on the outer wall of the first shell cover; the driving motor is arranged on the outer wall of the second shell cover; one end of the ash removal main pipe is connected with the air pump, the other end of the ash removal main pipe is connected with the driving motor, and the ash removal main pipe is positioned in the accommodating space; the ash removal branch pipe is communicated with the ash removal main pipe and is positioned in the accommodating space; the ash collecting component comprises an ash collecting pipe, an ash collecting box and an ash collecting bag, wherein the top of the ash collecting pipe is communicated and connected with the bottom of the shell, and the bottom of the ash collecting pipe is communicated and connected with the top of the ash collecting box; an accommodating space is formed inside the dust collecting box; the dust collecting bag is arranged in the dust collecting box.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: one end of the ash removal branch pipe is rotatably arranged on the ash removal main pipe through a bearing; the two rows of the ash removal branch pipes are symmetrically arranged on the ash removal main pipe; the ash removal branch pipe is provided with a plurality of air outlet holes.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the ash removal component also comprises a connecting piece; each group of symmetrical ash removal branch pipes are connected through a connecting piece; the connecting piece comprises a cross rod, a fixing frame and blades; two ends of the cross rod are respectively fixed at the central positions of the two fixing frames, and the fixing frames are fixedly arranged in the ash removal branch pipes; the blades are arranged on the cross rod and are positioned inside the ash removal main pipe.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the ash cleaning component also comprises a sealing bearing, a through pipe, a hollow pipe and a guide rod; the through pipe is rotatably arranged on the first shell cover through a sealing bearing and is connected with the air pump; the hollow pipe is installed on the second cover shell through a sealing bearing and connected with a driving motor; the through pipe and the hollow pipe are coaxially arranged, and two ends of the ash removal main pipe are respectively inserted into the through pipe and the hollow pipe; the guide rod is fixedly connected inside the hollow pipe along the axial direction, and the ash removal main pipe is sleeved on the guide rod.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the outer walls of the two ends of the ash removal main pipe are fixedly connected with conical heads, and limiting grooves are formed in the surfaces of the conical heads inwards; the inside walls of one ends of the through pipe and the hollow pipe are fixedly provided with limit blocks matched with the limit grooves, and the limit blocks are movably inserted in the limit grooves.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the inner wall of the first shell cover is fixedly connected with a connecting rod, the shell is provided with a connecting hole matched with the connecting rod, and the connecting rod is movably inserted in the connecting hole.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the ash collecting assembly also comprises a draught fan and an induced draft pipe; the induced draft fan is arranged on the induced draft pipe; the induced draft pipe is communicated with the bottom of the dust collecting box, and an air outlet of the induced draft pipe is communicated with the flue gas outlet.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the ash removal device for the flue heat exchanger of the thermal power plant as claimed in claim 1 or 7, wherein: the ash collecting bag comprises an ash removing cloth bag, a bag cage and a bag pressing ring; the ash removal cloth bag is sleeved outside the bag cage, and the bag pressing ring is sleeved outside the ash removal cloth bag; the hoop of the cage mouth of bag cage is outwards provided with a bag cage circle, bag cage circle bottom fixedly connected with inserts the post, press the bag to circle and seted up and insert the first jack of post assorted, insert the post and insert in the first jack.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: the dust collection box comprises a mounting plate and a box cover, the box cover is mounted on one side of the dust collection box, and the mounting plate is fixed on the inner wall of the box cover; the inner wall of the ash collection box is inwards sunken to form a sliding groove, the width of the sliding groove is consistent with the thickness of the mounting plate, and the mounting plate is movably inserted in the sliding groove; the mounting plate is provided with a through hole matched with the ash collecting bag, and the ash collecting bag penetrates into the through hole and is mounted on the mounting plate; be provided with on the mounting panel with insert post assorted second jack, it inserts in the second jack to insert the post.
As an optimal scheme of the ash removal device for the flue heat exchanger of the thermal power plant, the ash removal device comprises the following components: a handle is arranged on the outer wall of the box cover; the box cover is connected with the dust collecting box through a hasp lock; the mounting groove has been seted up to the inboard of spout, the internally mounted of mounting groove has universal ball, set up the spacing groove with universal ball matched with on the mounting panel, universal ball roll connection is in the inside of spacing groove. .
The invention has the beneficial effects that: the main ash removal pipe and the branch ash removal pipe in the ash removal component are driven by the driving motor to rotate, and the air pump introduces high-pressure air into the main ash removal pipe and the high-pressure air is sprayed out through the air outlet hole, so that the ash removal work can be continuously performed, and the heat exchange pipe and the heat exchange box can be effectively and comprehensively cleaned; meanwhile, dust collection is carried out by the dust collection box in real time, so that dust is collected conveniently while the dust cleaning work of the heat exchanger is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of a soot cleaning device in a first embodiment.
FIG. 2 is a schematic view of the ash removal assembly in the first embodiment.
FIG. 3 is a schematic view of a portion of the ash removal assembly of the first embodiment.
Fig. 4 is an enlarged structural view of the Y region in fig. 3 in the first embodiment.
FIG. 5 is a schematic sectional view showing the main ash removal pipe and the hollow pipe in the first embodiment.
FIG. 6 is a schematic sectional view of the main ash removal pipe, the connecting member, and the branch ash removal pipe in the first embodiment.
FIG. 7 is a sectional partial structure view of the main ash removal pipe, the connecting member and the branch ash removal pipe in the first embodiment.
Fig. 8 is an exploded view of the first housing cover and the housing in the first, second, and third embodiments.
Fig. 9 is an enlarged structural view of the L region in fig. 8 in the first, second and third embodiments.
FIG. 10 is a schematic structural diagram of the ash collecting assembly in the first, second and third embodiments.
Fig. 11 is a schematic structural view of an ash collection bag and a mounting plate in a second embodiment.
FIG. 12 is an enlarged structural view of the P region in FIG. 10 according to a second embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 10, a first embodiment of the present invention provides a soot cleaning device for a flue heat exchanger of a thermal power plant. Specifically comprises a shell 100, an ash cleaning component 200 and an ash collecting component 300; wherein the shell 100 is a heat exchange box of a heat exchanger, and an accommodating space X is formed inside the shell; because the heat exchange tubes in the existing heat exchange box are vertically and longitudinally arranged, aiming at the characteristic, a flue gas inlet 101 and a flue gas outlet 102 are arranged on a shell 100, and the positions of the flue gas inlet 101 and the flue gas outlet 102 are opposite; the housing 100 further comprises a first housing cover 103 and a second housing cover 104, the first housing cover 103 being mounted on a side adjacent to the flue gas inlet 101, the second housing cover 104 being mounted opposite to the first housing cover 103. The ash collecting component 300 comprises an ash collecting pipe 301, an ash collecting box 302 and an ash collecting bag 303, wherein the top of the ash collecting pipe 301 is communicated and connected with the bottom of the shell 100, and the bottom of the ash collecting pipe 301 is communicated and connected with the top of the ash collecting box 302; an accommodating space Y is formed inside the dust box 302; the dust collecting bag 303 is arranged inside the dust collecting box 302; wherein, the dust collecting pipe 301 is provided with a valve (not shown in the figure), the valve is opened during the dust cleaning operation, the dust in the shell 100 falls into the dust collecting bag 303 in the dust collecting box 302 from the dust collecting pipe 301, and the valve is closed when the dust in the dust collecting bag 303 is cleaned.
Wherein, the ash cleaning component 200 comprises an ash cleaning main pipe 201, an ash cleaning branch pipe 202, an air pump 203 and a driving motor 204; the air pump 203 and the driving motor 204 can be respectively mounted on the outer walls of the first cover 103 and the second cover 104 through mounting brackets; one end of the ash removal main pipe 201 is connected with the air pump 203, and the other end is connected with the driving motor 204; deashing branch pipe 202 has a plurality ofly and installs on the deashing is responsible for 201, and the deashing is responsible for 201 and deashing branch pipe 202 between for the intercommunication setting, and venthole A has all been seted up to the surface and the tip of deashing branch pipe 202 to the deashing is responsible for 201 and deashing branch pipe 202 and all is located accommodation space X. In addition, the ash removal assembly 200 further comprises a sealing bearing 206, a through pipe 207, a hollow pipe 208 and a guide rod 209; the through pipe 207 is rotatably mounted on the first shell cover 103 through a sealing bearing 206, the hollow pipe 208 is mounted on the second shell cover 104 through a sealing bearing 206, in order to keep the ash cleaning main pipe 201 in a linear state in the shell 100 and prevent the ash cleaning branch pipe 202 from touching the heat exchange pipe, the through pipe 207 and the hollow pipe 208 are coaxially arranged, and two ends of the ash cleaning main pipe 201 are respectively inserted into the through pipe 207 and the hollow pipe 208; the air pump 203 is communicated with the ash cleaning main pipe 201 through an exhaust pipe connecting pipe 207, and the other end of the ash cleaning main pipe 201 is connected with an output shaft of the driving motor 204 through a hollow pipe 208; wherein, the inside of the hollow pipe 208 is fixedly connected with a guide rod 209 along the axial direction, the guide rod 209 is inserted in the inside of the main ash cleaning pipe 201, and the main ash cleaning pipe 201 is sleeved on the guide rod 209. When 201 and deashing branch pipe 202 are responsible for in the installation deashing, adjust the angle of deashing branch pipe 202 earlier, be responsible for 202 the deashing and insert hollow tube 208 earlier through the clearance between the heat exchange tube in, and the cover is on guide arm 209, through hollow tube 208, guide arm 209's cooperation, can restrict the deashing and be responsible for 201, then close first cap 103, make the siphunculus 207 cover be responsible for 201 the other end in the deashing can, made things convenient for the dismouting of deashing 201 of being responsible for, the maintenance of the equipment of being convenient for. In addition, the main ash removal pipe 201 is a nickel-plated steel pipe, one end of the main ash removal pipe connected with the hollow pipe 208 is a sealing structure (a space matched with the length sleeved on the guide rod 209 needs to be reserved in addition), and one end connected with the through pipe 207 is an opening structure; the purpose is to facilitate the connection of the main ash cleaning pipe 201 and the air pump 203 for ventilation, reduce air leakage and improve the rust prevention effect.
Specifically, equal fixedly connected with conical head 201a on the both ends outer wall of deashing is responsible for 201, has inwards seted up spacing groove M in conical head 201 a's surface, is favorable to the deashing to be responsible for 201 and the butt joint between siphunculus 207 and the hollow tube 208, has certain limit function simultaneously to set up the seal cover in conical head 201 a's outside, with this improve its leakproofness, reduce high-pressure gas's revealing. A limiting block N matched with the limiting groove M is fixedly arranged on the inner side wall of one end of the through pipe 207 and the hollow pipe 208, the limiting block N is movably inserted in the limiting groove M, when the main ash cleaning pipe 202 is in butt joint with the through pipe 207 and the hollow pipe 208, the limiting block N is inserted in the limiting groove M, so that the main ash cleaning pipe 202, the through pipe 207 and the hollow pipe 208 can be driven by the driving motor 204 to rotate simultaneously, the other end of the through pipe 207 is communicated with an air outlet pipe of the air pump 203 through a rotary joint, the air pump can rotate while keeping ventilation, and the rotary joint is arranged on the outer wall of the first shell cover 103 through a fixing frame; the other end of the hollow pipe 108 is connected with the end part of an output shaft of the driving motor 104 through a coupler, the driving motor 204 is fixed on the outer wall of the second shell cover 104 through a mounting rack, and the main ash removal pipe 201 is driven to rotate through the hollow pipe 208; the ash removal main pipe 201 is limited by the through pipe 207 and the hollow pipe 208, so that the stability of the ash removal main pipe in the shell 100 can be improved. When the ash is cleaned, the main ash cleaning pipe 201 is driven to rotate by the driving motor 204, the ash cleaning branch pipes 202 on the main ash cleaning pipe 201 are positioned in gaps among the heat exchange pipes, and when the air pump 203 introduces high-pressure gas into the main ash cleaning pipe 201, the high-pressure gas is sprayed out through the air outlet A, so that the ash cleaning work can be continuously performed. The main ash removal pipe 201 and the branch ash removal pipes 202 can rotate, so that the heat exchange pipe and the heat exchange box can be effectively and comprehensively cleaned, meanwhile, an ash collection bag 303 in the ash collection box 302 is used for collecting dust, the dust is collected in real time, and the ash removal work of the heat exchanger is further improved.
Furthermore, the one end of deashing branch pipe 202 is passed through bearing K and is rotated and install on the deashing is responsible for 201, makes deashing branch pipe 202 can rotate, and the quantity of deashing branch pipe 202 can be set for according to the quantity of heat exchange tube, the multiunit the even symmetrical arrangement of deashing branch pipe 202 is in the both sides that the deashing was responsible for, presents the state that deashing branch pipe 202 can press from both sides the heat exchange tube in the centre, is convenient for carry out comprehensive deashing work. In addition, the ash removal assembly 200 further comprises a connecting piece 205, and each group of symmetrical ash removal branch pipes 202 are connected through the connecting piece 205; the connecting piece 205 comprises a cross bar 205a, a fixed frame 205b and blades 205 c; the fixed frames 205b are fixedly connected between the inner parts of each symmetrical group of the ash cleaning branch pipes 201, the centers of the two fixed frames 205b in each group of the ash cleaning branch pipes 201 are connected with a cross rod 205a, the outer wall of the cross rod 205a is provided with blades 205c, and the blades 205c are positioned in the ash cleaning main pipe 201. During the deashing, air pump 203 injects high-pressure gas, thereby high-pressure gas can strike blade 205c and drive deashing branch pipe 202 and rotate for the air current can be distributed discharge, the omnidirectional carries out the deashing work, and deashing branch pipe 202 is arranged in the space between the heat exchange tube, and high-pressure gas via venthole A blowout, to heat exchange tube and heat exchange case effectively, comprehensively deashing.
Example 2
Referring to fig. 10 to 12, a second embodiment of the present invention is based on the previous embodiment, wherein the ash collecting assembly 300 further includes an induced draft fan 304 and an induced draft pipe 305, the induced draft fan 304 is installed on the induced draft pipe 304, the induced draft pipe 304 is communicated with the bottom of the ash collecting box 302, and an air outlet of the induced draft pipe 304 is communicated with the flue gas outlet 102; when the main ash cleaning pipe 201 and the branch ash cleaning pipes 202 clean ash, the induced draft fan 304 is started to suck blown away dust into the ash collection box 302, the dust is collected through the ash collection bag 303, the filtered smoke is discharged into a smoke outlet of the heat exchanger through the induced draft pipe 305, when the induced draft fan 304 works, the flowing smoke in the heat exchange box can also give certain pressure to the dust, so that the flowing smoke enters the ash collection box 302, and then the operation of the induced draft fan 304 can accelerate the dust to enter the ash collection box 302.
Specifically, the ash collecting bag 303 comprises an ash removing cloth bag 303a, a bag cage 303b and a bag pressing ring 303c, the ash removing cloth bag 303a is sleeved outside the bag cage 303b, and the bag pressing ring 303c is sleeved outside the ash removing cloth bag 303 a; a bag cage ring 303b-1 is arranged at the position of a cage opening of the bag cage 303b in an outward circumferential direction, an inserting column 303b-2 is fixedly connected to the bottom of the bag cage ring 303b-1, a first inserting hole C matched with the inserting column 303b-2 is formed in the bag pressing ring 303C, and a hole matched with the inserting column 303b-2 is formed in a port of the ash removing cloth bag 303 a. When the ash removing cloth bag 303a is installed, the ash removing cloth bag 303a is sleeved outside the bag cage 303b, a port hole of the ash removing cloth bag 303a is sleeved on the inserting column 303b-2, then the belt pressing ring 303C is sleeved outside the ash removing cloth bag 303a, and the inserting column 303b-2 is inserted into the first inserting hole C, so that the ash removing cloth bag 303a can be clamped, the ash removing cloth bag 303a can be conveniently detached, and dust can be conveniently cleaned.
The dust box 302 comprises a mounting plate 302a and a box cover 302b, the box cover 302b is mounted on one side of the dust box 302, and the mounting plate 302a is fixed on the inner wall of the box cover 302 b; the inner wall of the dust collection box 302 is inwards recessed to form a sliding groove D, the width of the sliding groove D is consistent with the thickness of the mounting plate 302a, and the mounting plate 302a is movably inserted into the sliding groove D; the sealing gasket is arranged on the inner side of the sliding groove D, the sealing performance between the mounting plate 302a and the sliding groove D is improved, dust leakage is reduced, and the mounting plate 302a is convenient to move out of the dust collection box 302 due to the arrangement of the sliding groove D. In addition, a through hole I matched with the dust collection bag 303 is formed in the mounting plate 302a, a second insertion hole E matched with the insertion column 303b-2 is formed in the mounting plate 302a, when the dust collection bag 303 is mounted, the dust collection bag 303 is inserted into the through hole I, then the insertion column 303b-2 is inserted into the second insertion hole E in the mounting plate 302a, the dust collection bag 303 can be positioned, and meanwhile the dust collection bag 303 can be conveniently detached.
Further, mounting groove F has been seted up to spout D's inboard, mounting groove F's internally mounted has universal ball G, is favorable to reducing the friction between mounting panel 302a and the spout D, is convenient for pull out, push mounting panel 302 a. Offer on the mounting panel 302a with universal ball G assorted spacing groove H, universal ball G roll connection is in spacing groove H's inside, through universal ball G and spacing groove H's cooperation, can play the effect of restriction mounting panel 302a, prevents to cause the condition that drops at the pulling in-process, plays certain limiting displacement.
Example 3
Referring to fig. 8 to 10, a third embodiment of the present invention is based on the previous embodiment, a sealing gasket is disposed between the housing 100 and the first housing cover 103 to improve the sealing performance, and the housing is fixed by a snap lock, so as to facilitate assembly and disassembly for equipment maintenance; the inner wall of the first shell cover 103 is fixedly connected with a connecting rod 103a, the shell 100 is provided with a connecting hole B matched with the connecting rod 103a, the connecting rod 103a is movably inserted into the connecting hole B, and the first shell cover 102 is arranged on the shell 100 through the matching of the connecting rod 103a and the connecting hole B, so that the first shell cover 102 is convenient to disassemble and assemble, and the equipment is convenient to maintain; optionally, in practical application, a linear bearing may be installed on the connection hole B, and the connection rod is inserted into the linear bearing, so as to reduce the friction between the connection rod 103 and the connection hole 103a, and facilitate pulling the first cover case 103 to separate from the housing 100. In addition, the cover 302b is connected to the dust box 302 by snap-lock, a gasket is adhered to the inner wall of the cover 302b to improve the sealing performance between the cover 302b and the dust box 302, a handle 302b-1 is attached to the outer wall of the cover 302b, and the mounting plate 302a can be taken out of the dust box when the cover 302b is pulled.
In summary, the main ash removal pipe 201 and the branch ash removal pipes 202 in the ash removal assembly 200 can be driven by the driving motor 204 to rotate, when the air pump 203 introduces high-pressure air into the main ash removal pipe 201, the high-pressure air is ejected through the air outlet holes A, ash removal work is continuously performed, effective and comprehensive ash removal on the heat exchange pipes and the heat exchange box can be realized, meanwhile, dust collection work is performed by the ash collection box 302, dust is collected in real time, the ash removal work of the heat exchanger is further improved, and meanwhile, the dust is conveniently cleaned.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a flue heat exchanger ash removal device of thermal power factory which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the device comprises a shell (100), a containing space (X) is formed in the shell (100), a smoke inlet (101) and a smoke outlet (102) are arranged on the shell (100), the smoke inlet (101) and the smoke outlet (102) are opposite in position, and the shell (100) further comprises a first shell cover (103) and a second shell cover (104); the first shell cover (103) is arranged on one side adjacent to the flue gas inlet (101), and the mounting position of the second shell cover (104) is opposite to that of the first shell cover (103);
the dust cleaning component (200), the dust cleaning component (200) comprises a main dust cleaning pipe (201), a branch dust cleaning pipe (202), an air pump (203) and a driving motor (204); the air pump (203) is arranged on the outer wall of the first shell cover (103); the driving motor (204) is arranged on the outer wall of the second shell cover (104); one end of the ash removal main pipe (202) is connected with the air pump (203), the other end of the ash removal main pipe is connected with the driving motor (204), and the ash removal main pipe (202) is positioned in the accommodating space (X); the ash removal branch pipe (202) is communicated with the ash removal main pipe (201) and is positioned in the accommodating space (X);
the ash collecting assembly (300) comprises an ash collecting pipe (301), an ash collecting box (302) and an ash collecting bag (303), wherein the top of the ash collecting pipe (301) is communicated and connected with the bottom of the shell (100), and the bottom of the ash collecting pipe (301) is communicated and connected with the top of the ash collecting box (302); an accommodating space (Y) is formed inside the dust collecting box (302); the dust collection bag (303) is arranged inside the dust collection box (302).
2. The ash removal device for the flue heat exchanger of the thermal power plant as recited in claim 1, wherein: one end of the ash removal branch pipe (202) is rotatably arranged on the ash removal main pipe (201) through a bearing (K); the two rows of the ash cleaning branch pipes (202) are symmetrically arranged on the ash cleaning main pipe (201); the ash removal branch pipe (202) is provided with a plurality of air outlet holes (A).
3. The ash removal device for the flue heat exchanger of the thermal power plant as recited in claim 2, wherein: the ash cleaning component (200) also comprises a connecting piece (205); each group of symmetrical ash cleaning branch pipes (202) are connected through a connecting piece (205); the connecting piece (205) comprises a cross bar (205a), a fixed frame (205b) and a blade (205 c); two ends of the cross rod (205a) are respectively fixed at the central positions of two fixing frames (205b), and the fixing frames (205b) are fixedly arranged in the ash cleaning branch pipes (202); the blades (205c) are arranged on the cross rod (205a) and are positioned inside the ash cleaning main pipe (201).
4. The ash removal device for the flue heat exchanger of the thermal power plant as claimed in claim 1 or 3, wherein: the ash cleaning component (200) also comprises a sealing bearing (206), a through pipe (207), a hollow pipe (208) and a guide rod (209); the through pipe (207) is rotatably mounted on the first shell cover (103) through a sealing bearing (206), and the through pipe (207) is connected with the air pump (203); the hollow pipe (208) is installed on the second cover shell (104) through a sealing bearing (206), and the hollow pipe (208) is connected with the driving motor (204); the through pipe (207) and the hollow pipe (208) are coaxially arranged, and two ends of the ash removal main pipe (201) are respectively inserted into the through pipe (207) and the hollow pipe (208); the guide rod (209) is fixedly connected to the inside of the hollow pipe (208) along the axial direction, and the ash removal main pipe (201) is sleeved on the guide rod (209).
5. The ash removal device for the flue heat exchanger of the thermal power plant as recited in claim 4, wherein: the outer walls of two ends of the ash removal main pipe (201) are fixedly connected with conical heads (201a), and limiting grooves (M) are formed in the surfaces of the conical heads (201a) inwards; the inner side walls of the one ends of the through pipe (207) and the hollow pipe (208) are fixedly provided with limit blocks (N) matched with the limit grooves (M), and the limit blocks (N) are movably inserted in the limit grooves (M).
6. The ash removal device for the flue heat exchanger of the thermal power plant as claimed in claim 1 or 5, wherein: the inner wall of the first shell cover (103) is fixedly connected with a connecting rod (103a), a connecting hole (B) matched with the connecting rod (103a) is formed in the shell body (100), and the connecting rod (103a) is movably inserted into the connecting hole (B).
7. The ash removal device for the flue heat exchanger of the thermal power plant as recited in claim 6, wherein: the ash collecting assembly (300) also comprises an induced draft fan (304) and an induced draft pipe (305); the induced draft fan (304) is arranged on the induced draft pipe (304); the induced draft pipe (304) is communicated with the bottom of the dust collecting box (302), and an air outlet of the induced draft pipe (304) is communicated with the smoke outlet (102).
8. The ash removal device for the flue heat exchanger of the thermal power plant as claimed in claim 1 or 7, wherein: the ash collecting bag (303) comprises an ash removing cloth bag (303a), a bag cage (303b) and a bag pressing ring (303 c); the ash removal cloth bag (303a) is sleeved outside the bag cage (303b), and the bag pressing ring (303c) is sleeved outside the ash removal cloth bag (303 a); the bag cage is characterized in that a bag cage ring (303b-1) is arranged on the ring direction of a cage opening of the bag cage (303b) outwards, a plug column (303b-2) is fixedly connected to the bottom of the bag cage ring (303b-1), a first plug hole (C) matched with the plug column (303b-2) is formed in the bag pressing ring (303C), and the plug column (303b-2) is inserted into the first plug hole (C).
9. The ash removal device for the flue heat exchanger of the thermal power plant according to claim 8, wherein: the dust collection box (302) comprises a mounting plate (302a) and a box cover (302b), the box cover (302b) is mounted on one side of the dust collection box (302), and the mounting plate (302a) is fixed on the inner wall of the box cover (302 b); the inner wall of the ash collection box (302) is inwards recessed to form a sliding groove (D), the width of the sliding groove (D) is consistent with the thickness of the mounting plate (302a), and the mounting plate (302a) is movably inserted into the sliding groove (D); a through hole (I) matched with the ash collection bag (303) is formed in the mounting plate (302a), and the ash collection bag (303) penetrates into the through hole (I) and is mounted on the mounting plate (302 a); the mounting plate (302a) is provided with a second jack (E) matched with the inserting column (303b-2), and the inserting column (303b-2) is inserted into the second jack (E).
10. The ash removal device for the flue heat exchanger of the thermal power plant as recited in claim 9, wherein: a handle (302b-1) is arranged on the outer wall of the box cover (302 b); the box cover (302b) is connected with the dust collection box (302) through a hasp lock; mounting groove (F) have been seted up to the inboard of spout (D), the internally mounted of mounting groove (F) has universal ball (G), set up on mounting panel (302a) with universal ball (G) assorted spacing groove (H), universal ball (G) roll connection is in the inside of spacing groove (H).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111176161.2A CN113847614B (en) | 2021-10-09 | 2021-10-09 | Ash removal device for flue heat exchanger of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111176161.2A CN113847614B (en) | 2021-10-09 | 2021-10-09 | Ash removal device for flue heat exchanger of thermal power plant |
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| CN113847614A true CN113847614A (en) | 2021-12-28 |
| CN113847614B CN113847614B (en) | 2024-04-26 |
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| CN110882847A (en) * | 2019-12-17 | 2020-03-17 | 张忠建 | Air-blowing type dust removal device |
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| JP2000073335A (en) * | 1998-09-01 | 2000-03-07 | Shinagawa Tekkojo:Kk | Screw shaft for automatic dust collector |
| KR20110085227A (en) * | 2010-01-19 | 2011-07-27 | 코오롱건설주식회사 | Combustible waste gasification system |
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|---|---|
| CN113847614B (en) | 2024-04-26 |
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